Process of preparing aluminum alloys



Patented Dec. 14, 1937 UNITED sr rss FATE "r OFFICE PROCESS OF PREPARING ALUMINUM ALLOYS 1 Claim. (01. 75-140 This invention relates to the method of preparing an aluminum alloy in' which aluminum and certain ingredients are added which are very active in the producing of alloys. This applica- 5 tion is a division of my application Ser. No. 98,076,

filed Aug. 26, 1936.

The object of the invention is to provide a method of preparing such an alloy of superior texture for use either as a metal itself or as-an alloy of a special advantage for use in other alloys.

First step or stage: To produce this aluminum alloy, first melt together in a crucible 5.31% copw per, .88% nickel, 1.66% manganese. These elements are melted together because of their high melting points. They consequently very readily join together and make an alloy. This alloy can be cast into pig form and later combined with the proper percentage to make aluminum alloy,

the same being united to aluminum in the molten stage.

Second step or stage: I melt in a separate crucible 88.23% aluminum. When it is thoroughly melted and fluid I add the result of the first stage,

viz., copper, nickel and manganese. It is preferable to add these in the molten state, although the pig form having been previously melted and alloyed maybe used but it consumes unnecessary time in melting and mixing.

Third step or stage: After the first stage, alloy has been melted in the aluminum and thoroughly combined, I add to the whole mass 2.65% of tin and .88% magnesium-and thoroughly mix and combine the same together.

Fourth stage: After these metals and alloys of the first three stages have all been mixed together and thoroughly stirred, I add 39% silver,

' making the total of very resistant to corrosion.

Having thus described my invention, what I claim as new and desire to secure by Letters Patentxis:

The rocess of preparing an aluminum alloy consisting in melting together 5.31% of copper,

.88% of nickel, 1.66% of manganese; adding this when thoroughly melted to 88.23% of aluminum fused in a separate crucible, then adding to this melted mass 2.65% oftin, .88% of magnesium,

stirring the same thoroughly and while in a thoroughly fluid and melted condition finally adding .39% of silver, making up the total 100%,

"stirring and mixing thoroughly.

HENRY L. 

